Bill Allombert on Thu, 15 Dec 2005 14:28:30 +0100

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Re: reading environment variables into gp?

On Thu, Dec 15, 2005 at 12:40:00PM +0000, Prof. J. E. Cremona wrote:
> It would be very helpful if a gp script could read the value of a (unix)
> environment variable, into a string or integer variable.
> For example, something like
> s=getenv("MY_ENV_VAR");
> would result in s being a string variable.  The C function getenv() does
> this, so perhaps it would be simply a question of install-ing it?

You can do

You cannot install getenv() because it return a char * and there are no
prototype code for this type. 

On  the other hand I don't know how to set an environment variable inside
GP, so I use